The American company Royole Corporation introduced a serial smartphone with a flexible screen that can be folded in half, and the smartphone operating system can adapt the interface to the current screen state. The company has already begun to take pre-orders, and deliveries to customers will begin in December, reports The Verge.

In the past few years, sales of tablets and small smartphones have beenfalling, yielding to smartphones with an intermediate screen diagonal. Despite the fact that wearing a single device is more convenient, such smartphones are less convenient in everyday use than small devices, and have a smaller screen for viewing content. Some manufacturers experimented with smartphones and  tablets with a variable form factor, but they used two separate screens, so they never became popular. There is also the concept of creating a flexible device with a single curving screen, but due to insufficient wear resistance, such screens have not been used in serial devices until recently.

Royole Corporation was the first to introduce a flexible screen serial device. Due to the changeable form factor and the fact that the screen has a diagonal of 7.8 inches, it can be attributed to both the category of smartphones and tablets. AMOLED-screen has a resolution of 1920 × 1080 pixels and is folded in one direction only. The external surface of the device is not symmetrical – on one side of the screen there is a large ledge in which two cameras with a resolution of 20 and 16 megapixels are installed, as well as a flash.